
import moment from 'moment';
/**
 * @param {string} path
 * @returns {Boolean}
 */
export function isExternal(path: string) {
  return /^(https?:|mailto:|tel:)/.test(path)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUsername(str: string) {
  const valid_map = ['admin', 'editor']
  return valid_map.indexOf(str.trim()) >= 0
}

/**
 * @param {string} url
 * @returns {Boolean}
 */
export function validURL(url: string) {
  const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
  return reg.test(url)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validLowerCase(str: string) {
  const reg = /^[a-z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUpperCase(str: string) {
  const reg = /^[A-Z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validAlphabets(str :string) {
  const reg = /^[A-Za-z]+$/
  return reg.test(str)
}

/**
 * @param {string} email
 * @returns {Boolean}
 */
export function validEmail(email: string) {
  const reg = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
  return reg.test(email)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function isString(str: any) {
  if (typeof str === 'string' || str instanceof String) {
    return true
  }
  return false
}

/**
 * @param {Array} arg
 * @returns {Boolean}
 */
export function isArray(arg: Function) {
  if (typeof Array.isArray === 'undefined') {
    return Object.prototype.toString.call(arg) === '[object Array]'
  }
  return Array.isArray(arg)
}

// 获取最近月份
export function nextMonth(n = 1) {
  let month = moment(new Date()).subtract(n,'months').format("YYYY-MM-DD")
  return month;
}
// 获取当前时间
export function newMonth() {
  const now = moment(new Date()).format("YYYY-MM-DD")
  return now;
}

// 获取月初时间
export function monthStart(n = 1) {
  const monthStart = moment().startOf('month').subtract(n,'months').format("YYYY-MM-DD")
  return monthStart;
}
// 获取月底时间
export function monthEnd(n = 1) {
  const monthEnd = moment().endOf('month').subtract(n,'months').format("YYYY-MM-DD")
  return monthEnd;
}

// 校验
export function submitForm (form: any,that: any) {
  let isErr;
  that.$refs[form].validate((valid: Boolean) => {
    isErr = valid;
  });
  return isErr;
}


// 判断表单控件的值是否为空
const isFormEmpty = (val: any) => {
  return typeof val === 'undefined' || val === '' || val === null;
};
// 手机号校验
export const phone = (rule: [], value:string , callback: Function) => {
  if (isFormEmpty(value)) {
    callback(new Error('手机号不能为空'));
  }
  let regExp = /^1[2-9]\d{9}$/;
  if (isFormEmpty(value) || regExp.test(value)) {
    callback();
  }
  callback(new Error('手机号格式不正确'));
};
